Month: November 2017

This week GN solids control shipped 2 sets of containerized drilling waste management system to Russia client, totally we have over 10 units of such system working in Russia, the unique design is because of the low temperature in Russia area. The container with heating material to keep the equipments warm and can work smoothly, otherwise the equipments will stop working or damage the explosion proof motor when the temperature is lower than – 40℃.
The main equipments of the drilling waste management system for oil based drilling waste is vertical cuttings dryer, also called vertical G dryer. The other equipments list including：

40ft standard container with door and windows
Flushing pump for vertical G dryer
Mud recycling tank with mud agitator
Centrifuge feeding pump (10HP positive displacement pump) to feed the collected fluids to the decanter centrifuge which is installed outside the container.
The screw conveyor to transfer the discharged solids from the vertical cuttings dryer to cuttings collection box
And other accessories inside the container, like washing platform with clean water pipeline connecting port and cabinet for tools and small wear parts storage.

GNLW363CG-VFD decanter centrifuge is the most popular model centrifuge to equipped in the drilling waste management system with max treating capacity 40m3/h, normal working capacity The vertical cuttings dryer can be fixed speed to keep the smooth working speed and G force, but the decanter centrifuge must be variable frequency drive with positive pressurized VFD control panel, the inverter brand is world famous brand ABB, the other electric components are Schneider, Simens, etc.
The decanter centrifuge collection box material is SS304, the bowl material is made by centrifugal casting of duplex stainless steel 2304, which is much better than SS316L.
If you need such customized design drilling waste management system, pls contact with GN solids control.

This week GN solids control shipped 2 units of chemical dosing system with 2 big bowl big volume decanter centrifuge to our Singapore Clients for TBM waste mud treatment. This is not the first time for GN to ship such dewatering unit to Singapore for TBM waste water treatment project, several years ago we shipped another unit of containerized dewatering unit with decanter centrifuge installed inside 20ft container for convenient shipment, operation and rain proof.

GNLW553C-VFD decanter centrifuge is a 22 inch bowl diameter centrifuge, this is not the largest centrifuge GN can produce, we also have GNLW764-VFD with 30 inch bowl diameter centrifuge, it can be used for Tunneling project when huge amount water/ sludge is required for the operation.

The chemicals are added in the chemical dosing system and mixed, then the dosing pump will transfer the chemicals to the decanter centrifuge feed tube, the chemicals will be added to the waste water/ waste sludge from the TBM and after treatment, the ultra fine solids will be separated out from the waste water so they can be reused for the TBM operation. The centrifuge mechanical separation cut point is 2~5 microns, if most of the solids inside the waste water is smaller than 2 microns, it is hard to separate out them, you have to add flocculant to make them flocculation and easy to be separated by the high speed decanter centrifuge.

Continue reading “Chemical dosing system with big bowl decanter centrifuge to Singapore”

Recently GN solids control engineer is working in the jobsite of the USA client for construction industry for the slurry separation system installation and first time commissioning. We have branch company in Houston, USA called GN Solids America LLC, we will responsible for the after sales service and pre- sales service and money collection, we also have spare parts in stock to meet the client’s operation requirement. Once there is any trouble shooting in the jobsite, the client can call GN directly to get the immediate service.

The client totally bought 2 sets of such slurry separation system with the same technical configuration. The equipments below are composed in the system.
1)    Trash collection hopper to collect the waste slurry
2)    Coarse screen separation shale shaker

3)    High G force drying shaker
The drying shaker is a 4 panel shale shaker with high G force up to 8.0G, the composite material shaker screen lasts longer working life and better performance.
4)    Mud cleaner
The mud cleaner is the combination of the desilter cone and bottom shale shaker to separate the fine solids from the slurry.
5)    Big bowl big volume decanter centrifuge: The 22 inch bowl diameter decanter centrifuge max treating capacity is 110m3/h for clean water, the normal treating capacity for drilling fluids treatment is 90m3/h, for slurry separation with chemical dosing system, the treating capacity will be reduced a lot based on different slurry conditions.

Not only for oilfield drilling fluids recycling system and drilling cuttings treatment, GN solids control equipments can be also used for no dig trenchless industry, like HDD, CBM, Geothermal drilling, water well drilling, we also design customized slurry separation system for construction industry, like TBM, Bore pilings, tailings cleaning, etc. Welcome to contact GN solids control or GN solids America for a quotation.